Temperature-regulator



L. G. ODONNELL. TEMPERATURE REGULATOR.

APPLICATION FILED JULY 17. 1919.

1,355,250, Patented Oct. 12,1920.

2 SHEETS-SHEET I.

ATTORNEY L G.0DONNELL TEMPERATURE REGULATOR.

APPLICATION FILED JULY 17, 1919.

1,355,250. Patented Oct. 12, 1920.

2 SHEETSSHEET 2.

' INVENTOR 7 4 oygmz ATTOR N EY Nrrao STATES PATENT orr crz.

LEWIS G. ODONNELIi, 0F COSCOIB, CONNECTICUT.

TEMPERATURE-REGULATOR.

Specification of Letters Patent.

Patented. Oct. 12-, 1920.

Application filed my 17, 1919. Serial in. 311,668.

To all whom. it may concern Be it known that I, LEWIS G. ODoNNELL, acitizen of the United States, residing at Coscob, F airfield county,State of Connectiout, have inverted new and useful Improvements inTemperature-Regulators, of which the following is a specification.

The object of this invention is to provide an automatic temperatureregulator directly connected with a valve whereby the passage ofliquids, gases and'the like is controlled in an efficient and positivemanner.

A further object is to provide a temperature regulator comprised ofessentially simple parts adapted for long and continued service andwhich is extremely sensitive in its operation.

A still further object is to provide means whereby, if the regulatorelements become damaged or deranged, the valve will become opened andremain open thereby avoiding dan erwhich might otherwise occur.

'1 ese and other like objects, which will become more fully apparent asthe description progresses, are attained by the novel construction andcombination of parts hereinafter described and shown in the accompanyingdrawings, forming a material part of this disclosure, and in which VFigure his a side elevational view of a water circulating system as usedin connection with a conventional type of internal combustion motor, andindicating the application of the invention.

Fig. 2 is an enlarged vertical sectional view taken through atemperature regulator made in accordance with the invention.

Fig. 3 is a further enlarged transverse sectional view showin one of theoperative double diaphra e ements used in connection therewit and Fig. 4is a perspective viewshowing the diaphragm supports, and connectingmeans combined'therewith.

Referring to the drawings in detail, the numeral 10 designates the bodyor cas ng of a four cylinder, internal combustion motor,'the samecontaining the rotary parts thereofland which energize the fly wheel 11at one end. The cylinders 12 extend upward 7 into cooling jackets 13,.which are mainnozzle 16, which is arranged at the top of the radiator inthe usual manner.

The heated water is returned to the radiator 15 through the pipe 17 andinterposed in the connection therebetween is an embodiment of theinvention, the lower element of which is engaged direct with a coupling18 on the end of the return pipe, while the dischargeend of theregulator is engaged with the radiator at a point near its top. SeeFig. 1. 5

Engaged with the coupling 18 is an angularly disposed tube 19, having alevel, ex panded upper end 20, merging into an outer annular flange 21,upon which rests a similar flange 22, these flanges being firmly engagedto ether by a plurality of spaced screw bo ts 23.

Formed with the flange 22 is a cylindrical casing 24, partiallysurrounded at its upper end by an extendin flange 25, upon which reststhe correspon ingly shaped flange 26, formed with a valve casing 27,from which integrally extends an angular tube 28, the same being adaptedto engage with the I'fldl'. ator 15, the tubes 19 and 28 being extendedin opposite directions but in a substantially parallel plane;

.The flanges 25 and 26 are secured together by screws 29, except in thevicinity of the tube 28, where relatively long bolts 30 are .passedthrou h. the flanges 21 and 22 and are threaded into the valve flange 26direct.

Engaged, in a screw-threaded opening formed in the upper portion 'ofthevalve chamber 27 is a flanged bonnet 31, from which extends a centralscrew-threaded nipple 32, the same engaging a tubular cap a sleeve 37,secured to a valve stem 38, the a stem passing through a central openingin the bonnet 31 and a recess 39 formed in the ni ple 32.

esting in-the bottom of the recess 39 is the lower end of a coiledextension spring 40 encircling the stem 38 and exerting pressure againstthe hub of a milled nut 41, suited to the screw-threaded upper portionof the stem in such manner that the tension of the spring may' be variedby actuating the. nut.

Formed with the sleeve 37 is a head 43, fixed upon a circular spacingblock 44 firmly engaged with the upper member 46 of a pair of thinflexible metallic diaphragms which 5 are firmly united at theirperipheries in a pliable metallic band 48, over which is spun orotherwise secured a ring 49 having inturned flanged elements ofsubstantially U section, the arrangement being such as to present ajointaround the periphery of each of the several pairs of diaphragms each ofwhich have undulating annular faces adaptedto act in a resilient manner.

A central opening 50 is formed in each of the diaphragms 46 and 47,adjacent to I -which are tightly secured washers 51', their centralopenings 52 being in register. The lowermost washer in the row issecured centrally on the upper side of a cross shaped interior flange 59formed in the plane of the cylinder flange 22, the flange 59constituting a partial partition or wall across the passage through theend of the pipe 19. The cross arms being held upon the extending flange59.by screws 60, the arm 53 of the cross-shapedi element being providedwith holes 53 for this purpose.

Resting upon the uppersurface of the cross arms, and held in position bythe lugs 58, is a cylinder having inner and outer walls respectively 61and 62 hermetically closed at both ends, the cylinder extending upwardcoincidentwith the uppermost of the row of diaphragms. The annular space63 between the cylinder walls constitutes a tank or reservoir and is incommunication with the openings 57 by thewhollow plugs 64, and also withthe interior of the several diaphragms by the opening 56,, containingthe central hollow plug 65.

The annular tank and also the several diaphragms having been. partiallyfilled with a medium subject to expansion and contraction, according tothe temperature, and the parts having been hermetically sealed thedevice is ready for use.

The medium preferable to employ is ordinary atmospheric air, exhaustedto produce a negative pressure or partial vacuum, capable of normallydrawing the sides of each pair of diaphragms nearly or quite in contactwhen in a relatively cool condition.

This vacuum obviously also exists in the reservoir or tank 63,here-shown as a hollow annulus, (although not necessarily limited tosuch form) interconnected with the dia the medium therein is caused toexpand,

- raising the valve in an obvious manner, as

shown in- Fig. 2, and permitting the heated water-to pass through-thepipe 28 into the radiator.

Should however the water be insufiiciently heated to expand the mediumin the dia phragms, then, due to theirinher'ent resilience and thepartial vacuum therein they will close, drawing the valve to its seatand preventing thewater from escaping until the same shall have obtaineda definite high temperature.

Should a leak occur in the diaphragms or tank so as to render theminoperative, by

destroying the partial vacuum thereof, the

spring 40-will raise automatically the valve 36, permitting free passageof the water and preventing damagebeing done the motor.

It will be evident that the simplicity of constrlfction, smallspacerequired and avoidance of danger, should inoperativeness occur, presentpoints of obvious practicability and effectiveness.

The foregoing disclosure however, is to be regarded as descriptive onlyand not as restrictive or limitative of the invention, of which obviouslembodiments may be constructed, inclu ing many minor modifications,without departing from the general spirit and scopeherein indicated andclaimed as'follows:

1. In a temperature regulator, the combination with a valve chamber,inlet and outlet connectionsthereto, and a valve operative 'in saidvalve chamber, of a casing interposed between said valve chamber andsaid inlet, a series-of intercommunicating pairs of resilient diaphragmsengaging between the bottom of said casing and said valve, a

reservoir circumjacent to said diaphragms, there being hollowconnections between said reservoir and said diaphragms, said elementsbeing hermetically sealed and a partial vacuum formed therein adapted tocontract said diaphragms and close said valve when cool, and to expandthe diaphragms and raise the valve when heated. w 5

2. In a temperature regulator, the combination with a valve chamber,inlet and outlet connections thereto, .and a valve operative in saidvalve chamber, of a cylindrical casing engaged between said chamber andsaid inlet, a plurality of double faced resilient diaphragms arranged inspaced relation in said casing, hollow connections between the opposedfaces of said diaphragms, operative connections between the uppermost ofsaid diaphragms and said valve, one or more reservoirs surrounding saiddiaphragms, hollow connections between said reservoirs and saiddiaphragms, said reservoirs and diaphragms being sealed after the airhas been partially extracted therefrom whereby the faces of saiddia-phragms are drawn toward each other when cool and forced apart whenheated.

3. In a temperature regulator, the combination with a valve chamber,inlet and outlet connections thereto, and a valve operative in saidvalve chamber, of a casing interposed between said valve chamber andsaid inlet,

a plurality of interconnected resilient diaphragms. in said casing, saiddiaphragms being arranged in hermetically sealed pairs from which theair has been partially extracted, a cross-shaped element fixed in saidcasing containing internal recesses, a thin walled reservoir encirclingsaid diaphragms secured on said cross and communicating through therecess with the diaphragms whereby the negativepressure is equalized,

and operative connections between said diaphragms and said valve wherebythe latter is raised or lowered according to the fluctuation of pressurein said diaphragms and reservoir caused by changes of temperature.

4. In a temperature regulator, the combination with a valve chamberhaving an outlet, a bonnet engaged on said chamber and a removable caponsaid bonnet, of a cylindrical casing below said chamber, an inletthereto, a vertical row of double faced diaphragms interconnected inseries in said casing, areservoir in said casing communicating' withsaid diaphragms, said reservoir and diaphragms being sealed andcontaining an ex'pansible medium, a valve in said chamber operativelyengaged by said diaphragms, a stem for said valve extending into saidcap, and an adjustable tensioned spring in said cap adapted to normallyraise said valve, opposing the contractive effects of said diaphragmswhenuncontrolled by the medium therewithin.

'In testimony that I claim the invention above set forth I aflix mysignature in pres ence of two witnesses.

a LEYVIS G. ODONNELL. NVitnesses:

B. G. ODONNELL, DANIEL G. JEssUP.

